Hi Mike, eiR as it is right now does not support eiRxC models; however, the R package eiPack has the capability to do eiRxC models and implements the Rosen, Jiang, King and Tanner (2001) eiRxC model. Let me know if you have any more questions about this! Molly On Tue, Nov 15, 2011 at 4:16 PM, Michael McDonald <mmcdon(a)gmu.edu> wrote:

Thanks for the reply. One more question: Has the RxC approach withstood a Frye challenge? Do you have an example of the method being accepted by a court or used by DoJ in a Section 5 preclearance submission? ============ Dr. Michael P. McDonald Associate Professor, George Mason University Non-Resident Senior Fellow, Brookings Institution Mailing address: (o) 703-993-4191 George Mason University (f) 703-993-1399 Dept. of Public and International Affairs mmcdon(a)gmu.edu 4400 University Drive - 3F4 http://elections.gmu.edu Fairfax, VA 22030-4444 From: owner-ei_at_lists_gking_harvard_edu(a)mail.hmdc.harvard.edu [mailto: owner-ei_at_lists_gking_harvard_edu(a)mail.hmdc.harvard.edu] On Behalf Of Gary King Sent: Tuesday, November 15, 2011 11:03 PM To: Molly Roberts Cc: mmcdon(a)gmu.edu; ei(a)lists.gking.harvard.edu Subject: Re: [ei] Two-stage EI model Hi Mike, just to add to Molly's point: the 2 step EI approach has pretty much been supplanted by the RxC approach, so we'd suggest you start there. We're working on including this in eiR, but for now you can still use it as per Molly's point. Gary -- Gary King - Albert J. Weatherhead III University Professor - Director, IQSS - Harvard University GKing.Harvard.edu - King(a)Harvard.edu - @kinggary - 617-500-7570 - Asst 495-9271 - Fax 812-8581 On Tue, Nov 15, 2011 at 9:52 PM, Molly Roberts <roberts8(a)fas.harvard.edu> wrote: Hi Mike, eiR as it is right now does not support eiRxC models; however, the R package eiPack has the capability to do eiRxC models and implements the Rosen, Jiang, King and Tanner (2001) eiRxC model. Let me know if you have any more questions about this! Molly On Tue, Nov 15, 2011 at 4:16 PM, Michael McDonald <mmcdon(a)gmu.edu> wrote: Gary, I have installed the EI version for R and have successfully run a one-stage EI model that is consistent with Goodman’s regression estimates for a turnout model on the same data. I am wondering if there is any available code to run a two-stage EI model to further estimate voting propensities by race, while accounting for turnout. Best regards, -Mike ============ Dr. Michael P. McDonaldAssociate Professor, George Mason University Non-Resident Senior Fellow, Brookings Institution Mailing address: (o) 703-993-4191 George Mason University (f) 703-993-1399 &nb p; Dept. of Public and International Affairs mmcdon(a)gmu.edu 4400 University Drive - 3F4 http://elections.gmu.edu Fairfax, VA 22030-4444 -- EI mailing list served by Harvard-MIT Data Center Subscribe/Unsubscribe: http://lists.gking.harvard.edu/?info=ei More info on ei and eiR: http://GKing.Harvard.edu/eiR